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ANSI Approves SMACNA Standard

CHANTILLY, Va. - The American National Standards Institute (ANSI) has approved the Sheet Metal and Air Conditioning Contractors' National Association's (SMACNA's) "Round Industrial Duct Construction Standards," second edition, as an ANSI standard.

SMACNA believes that approval will encourage wider domestic use of SMACNA's standard by state and local code governing bodies as well as the design and engineering community.

The "Round Industrial Duct Construction Standards" offers a standardized, engineered basis for design and construction of industrial ducts of Classes 1 to 5. It includes a spiral duct chapter for Classes 1 and 2, and covers design pressures ranging from 30-inch water gauge negative to 50-inch water gauge positive, plus carbon and galvanized steel tables.

Also included are expanded tables for stainless steel and aluminum, plus expanded tables for duct sizes up to 96-inches in diameter, introduction of a new Duct Class 5 for systems handling corrosives, and spiral lockseam pipe.

As an alternative to using tables, the publication has a manual calculation procedure using equations and fully developed examples. It also offers optional calculation software.

For further information, visit www.smacna.org.

Publication date: 12/01/2003

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